Pulse energy storage high-voltage power supply in Z-type connection

Abstract

The invention discloses a pulse energy storage high-voltage power supply in Z-type connection, and relates to the technical field of power electronics, and the high-voltage power supply comprises a supporting structure and a power supply module. The support structure comprises a power ground metal plate, a plurality of post insulators and an epoxy support bottom plate, one end of each post insulator is connected with the power ground metal plate, and the other end of each post insulator is connected with the epoxy support bottom plate; a plurality of module cavities are formed above the epoxy bracket bottom plate through the epoxy bracket top plate, the epoxy bracket partition plate, the spacing vertical plate and the epoxy bracket vertical plate; the number of the power supply modules is multiple, all the power supply modules are located in the multiple module cavities respectively, and all the power supply modules are sequentially connected in series in a Z-shaped connection mode. And through a Z-shaped connection method of the power supply module, the supporting height of the epoxy bracket is reduced, and the occupied space of the energy storage type high-voltage power supply is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power electronics, and more particularly to a Z-type connected pulse energy storage high-voltage power supply. Background Art

[0002] In view of the current status of controllable magnetic confinement nuclear fusion energy development in my country, we will develop the combustion plasma technology of the device by improving the plasma ion heating capability and the active control capability of advanced operating modes, and solve the problem of core-level plasma stability control. To ensure enhanced plasma ion heating capabilities, electron cyclotron heating, ion cyclotron heating, low-noise current drive, and neutral beam injection heating are required. The gyrotrons and klystrons in these systems require high-voltage power supplies for debugging. These high-voltage power supplies typically operate at 380V AC / 220V, storing energy in large-capacity energy storage capacitors to power the gyrotrons and klystrons used for debugging. The original PSM high-voltage power supply modules output DC voltage by connecting each column in series before the entire system is connected in series. Consequently, the DC voltage output by the power supply module at the bottom is also at a very high potential, and the epoxy brackets used require higher-grade support insulators. This results in a larger footprint for high-voltage power supplies of the same voltage level. Furthermore, the increased height makes it difficult to effectively utilize the space within a room with a fixed height. To reduce the space occupied by the energy storage high-voltage power supply and better utilize the available height to achieve higher voltage output, a new design approach is needed to reduce the support level of the high-voltage power supply system while ensuring its safety and reliability.

[0003] In view of this, a Z-type connection pulse energy storage high voltage power supply is proposed to solve the existing problems. Summary of the Invention

[0004] The object of the present invention is to provide a Z-type connected pulse energy storage high voltage power supply to solve the problems existing in the above background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: The present application provides a Z-type connected pulse energy storage high-voltage power supply, comprising: The support structure includes a power supply metal plate, multiple support insulators, and an epoxy support base plate; the power supply metal plate is arranged flat, and the multiple support insulators are perpendicular to the upper surface of the power supply metal plate, with one end of each support insulator connected to the power supply metal plate and the other end of each support insulator connected to the epoxy support base plate; multiple module chambers are formed above the epoxy support base plate by the epoxy support top plate, epoxy support partition, spacer vertical plate, and epoxy support vertical plate; The power supply module is provided with a plurality of power supply modules, each power supply module is respectively located in a plurality of module chambers, and each power supply module is connected in series in sequence in a Z-type connection manner.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the plurality of epoxy bracket uprights are spaced apart and arranged above the epoxy bracket bottom plate, and the epoxy bracket uprights are perpendicular to the upper surface of the epoxy bracket bottom plate; The bottom end of each epoxy bracket vertical plate is fixed to the epoxy bracket bottom plate, and the top end of each epoxy bracket vertical plate is fixed to the epoxy bracket top plate, and a vertical cavity is formed between adjacent epoxy bracket vertical plates in the vertical direction; Each epoxy bracket partition is arranged in a vertical cavity, and each vertical cavity is divided into a plurality of horizontal cavities, and the epoxy bracket partitions are perpendicular to the epoxy bracket vertical plate; Each spacing plate divides the transverse cavity into a plurality of module chambers, and the spacing plates are parallel to the epoxy support plates.

[0008] Furthermore, a double-layer epoxy bracket vertical plate structure is adopted between the adjacent vertical cavities.

[0009] Furthermore, the above-mentioned multiple epoxy bracket partitions are evenly arranged in each vertical cavity.

[0010] Furthermore, the above-mentioned multiple epoxy bracket uprights are evenly arranged above the epoxy bracket upright.

[0011] Furthermore, the plurality of spacing vertical plates divide the transverse cavity into equal parts.

[0012] Furthermore, the Z-type connection method is that the power modules of each layer are connected in series in sequence, and the layers are connected in series in sequence.

[0013] Furthermore, the power module includes a fuse, a single-phase uncontrolled rectifier bridge, a filter circuit, a buffer circuit, a freewheeling diode, an IGBT, a current sensor and a drive protection circuit board that are connected to each other.

[0014] Furthermore, the fuse is located in the charging positive electrode circuit formed by the single-phase uncontrolled rectifier bridge, and the output end of the single-phase uncontrolled rectifier bridge is connected to the filter circuit; One end of the filter circuit output is connected to the buffer circuit, and the other end of the filter circuit output is connected to the current sensor and the IGBT in sequence. A freewheeling diode is connected between the IGBT and the buffer circuit. One end of the buffer circuit output forms the output positive pole of the power module, and one end of the IGBT output forms the output negative pole of the power module.

[0015] Furthermore, the driving protection circuit board is connected to both the IGBT and the current sensor.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The Z-type connection method of the power module reduces the support height of the epoxy bracket and reduces the space occupied by the energy storage high-voltage power supply.

[0017] 2. The energy storage power supply mode is adopted, which is not affected by the insulation of the high-power high-voltage isolation transformer. The insulation withstand voltage after charging is mainly related to the potential of the power module, making the system design and operation more flexible.

[0018] 3. The power modules of the first layer are connected in series to minimize the potential. When n 1kV power modules are used on each layer, the relative maximum voltage difference of each layer is nkV, which is much lower than the maximum voltage achieved by connecting each column in series, thereby reducing the difficulty and cost of insulation design. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of a pulse energy storage high-voltage power supply in an embodiment of the present invention; Figure 2 Schematic diagram of a power panel of a power module according to an embodiment of the present invention; Figure 3 Schematic diagram of the electrical power module in an embodiment of the present invention.

[0020] Markings and corresponding parts names in the accompanying drawings: 1. Power supply isolation transformer; 2. Power ground metal plate; 3. Pillar insulator; 4. Power module; 5. Epoxy bracket top plate; 6. Epoxy bracket partition; 7. Epoxy bracket vertical plate; 8. Epoxy bracket bottom plate; 9. Charging positive electrode; 10. Charging negative electrode; 11. Output positive electrode; 12. Output negative electrode; 13. Fuse; 14. Single-phase uncontrolled rectifier bridge; 15. Filter circuit; 16. Buffer circuit; 17. Freewheeling diode; 18. IGBT; 19. Current sensor; 20. Driver protection circuit board. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that if the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0025] Furthermore, the use of terms such as "horizontal," "vertical," and "overhanging" does not necessarily imply that the component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0026] In the description of the embodiments of the present invention, "a plurality of" means at least two.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] Example 1: Since high-voltage power supplies of the same voltage level occupy a large space, the increase in height makes it impossible to effectively utilize the space in a room with a fixed height. In order to reduce the space occupied by the energy storage high-voltage power supply and better utilize the existing height to achieve a higher voltage level high-voltage power output, this embodiment provides a pulse energy storage high-voltage power supply with a Z-type connection, such as Figure 1 Shown, including: Support structure, the support structure includes a metal plate 2 of the power supply, a plurality of support insulators 3 and an epoxy support base plate 8, as shown Figure 1 As shown, the power supply metal plate 2 is laid flat, and a plurality of support insulators 3 are perpendicular to the upper surface of the power supply metal plate 2. One end of each support insulator 3 is connected to the power supply metal plate 2, and the other end of each support insulator 3 is connected to the epoxy support base plate 8. A plurality of module chambers are formed above the epoxy support base plate 8 by the epoxy support top plate 5, the epoxy support partition plate 6, the spacer vertical plate and the epoxy support vertical plate 7.

[0029] Among them, the above-mentioned multiple epoxy bracket uprights 7 are arranged at intervals above the epoxy bracket bottom plate 8, and the epoxy bracket uprights 7 are all perpendicular to the upper surface of the epoxy bracket bottom plate 8; the bottom end of each epoxy bracket upright 7 is fixed to the epoxy bracket bottom plate 8, and the top end of each epoxy bracket upright 7 is fixed to the epoxy bracket top plate 5, and a vertical cavity is formed between adjacent epoxy bracket uprights 7 in the vertical direction; each epoxy bracket partition 6 is arranged at intervals in the vertical cavity, and each vertical cavity is divided into multiple horizontal cavities, and the epoxy bracket partitions 6 are all perpendicular to the epoxy bracket uprights 7; each spacing upright divides the horizontal cavity into multiple module chambers, and the spacing uprights are parallel to the epoxy bracket uprights 7.

[0030] Furthermore, a double-layer epoxy bracket vertical plate 7 structure is adopted between the above-mentioned adjacent vertical cavities; multiple epoxy bracket partitions 6 are evenly arranged in each vertical cavity; multiple epoxy bracket vertical plates 7 are evenly arranged above the epoxy bracket vertical plates 7; and multiple spacing vertical plates divide the horizontal cavities equally.

[0031] Specifically, the Z-type connection method is that the power modules 4 of each layer are connected in series in sequence, and each layer is connected in series in sequence; Figure 1 As shown, the Z-type connection can be Figure 1 The power modules 4 are connected in the order of numbering, that is, starting from the right end of the first layer and connected in series from right to left.

[0032] Optionally, the above-mentioned pulse energy storage high-voltage power supply further includes: The power supply module 4 is provided in plurality, each power supply module 4 is located in a plurality of module chambers, and each power supply module 4 is connected in series in sequence in a Z-shaped manner.

[0033] The power module 4 includes a fuse 13 , a single-phase uncontrolled rectifier bridge 14 , a filter circuit 15 , a buffer circuit 16 , a freewheeling diode 17 , an IGBT 18 , a current sensor 19 and a drive protection circuit board 20 , which are connected to each other.

[0034] Specifically, the fuse 13 is located in the charging positive electrode 9 circuit formed by the single-phase uncontrolled rectifier bridge 14, and the output end of the single-phase uncontrolled rectifier bridge 14 is connected to the filter circuit 15; One end of the output of the filter circuit 15 is connected to the buffer circuit 16, and the other end of the output of the filter circuit 15 is connected to the current sensor 19 and IGBT18 in sequence. A freewheeling diode 17 is connected between the IGBT18 and the buffer circuit 16, and one end of the output of the buffer circuit 16 forms the output positive pole 11 of the power module 4, and one end of the output of the IGBT18 forms the output negative pole 12 of the power module 4, and the driving protection circuit board 20 is connected to both the IGBT18 and the current sensor 19.

[0035] In this embodiment, the Z-shaped connection method of the power module 4 is used to reduce the support height of the epoxy bracket and the space occupied by the energy storage high-voltage power supply. The energy storage power supply mode is adopted, which is not affected by the insulation of the high-power high-voltage isolation transformer. The insulation withstand voltage after charging is mainly related to the potential of the power module 4, making the system design and operation more flexible. The power modules 4 of the first layer are connected in series in sequence to minimize the potential. When n 1kV power modules 4 are used in each layer, the relative maximum voltage difference of each layer is nkV, which is much lower than the maximum voltage achieved by connecting each column in series, thereby reducing the difficulty and cost of insulation design.

[0036] Example 2: In modern industry and scientific research, the demand for high-voltage power supplies is increasing, and higher requirements are also placed on their space occupancy and performance. In order to achieve the goal of reducing the space occupancy of the pulse energy storage high-voltage power supply, a new energy storage power supply mode is considered. This mode gets rid of the insulation limitations of the high-power high-voltage isolation transformer. After charging is completed, its insulation withstand voltage mainly depends on the potential of the power module 4. This makes the design and operation of the entire system more flexible, and reduces the design difficulties and operation risks caused by the insulation problems of the high-power high-voltage isolation transformer. The use of an energy storage high-voltage power supply does not require consideration of a high-power grid with continuous power supply. By adopting an ordinary power supply of AC 380V, DC high voltage output can be achieved, which increases the application environment of the high-voltage power supply and the application scenarios of the energy storage high-voltage power supply.

[0037] The energy storage high voltage power supply provided in this embodiment realizes the output of DC voltage through a unique Z-type cascade mode; Figure 1 As shown, the voltage of each power module 4 is stabilized at about DC1000V. Through a clever cascade method, a high voltage output of more than 60kV can be easily achieved to meet the needs of various high voltage application scenarios.

[0038] The entire pulse energy storage high-voltage power supply mentioned above is composed of a support structure and multiple power modules 4, among which the support structure is mainly composed of multiple key parts such as the power supply metal plate 2, the support insulator 3, the epoxy bracket top plate 5, the epoxy bracket partition 6, the epoxy bracket vertical plate 7, and the epoxy bracket bottom plate 8; these components cooperate with each other to provide stable support and reliable electrical isolation for the high-voltage power module 4.

[0039] First, a solid foundation must be built for the entire pulse energy storage high-voltage power supply system, and the power ground metal plate 2 must be placed on a stable and solid foundation platform. As the foundation of the entire support structure, the power ground metal plate 2 plays a key role in grounding, safely conducting the current in the system into the earth to ensure the safe operation of the system, and keeping the entire installation surface at the same potential, thus avoiding system failures caused by different ground potentials in the entire high-voltage power supply system. At the same time, it also provides a stable installation platform for the entire support structure, ensuring the installation accuracy and stability of other components.

[0040] Among them, the power ground metal plate 2 is placed on the basic platform. It serves as the basic support and grounding component of the entire system. Its installation stability is crucial to the installation of subsequent components and the safe operation of the system. During the installation process, a level measurement tool is required to ensure that the power ground metal plate 2 is placed horizontally to ensure the accurate installation and stable operation of subsequent components.

[0041] Furthermore, the support insulator 3 is placed on the metal plate 2 of the power supply ground, and is mainly used for electrical insulation isolation between the high-voltage power supply module 4 and the ground; its height has an important influence on the spatial volume occupied by the high-voltage power supply, because its height depends on the highest potential of the bottom power supply module 4 on the epoxy bracket to the ground; the traditional high-voltage power supply support insulator 3 is relatively high and occupies a large amount of space; and the new design in this embodiment effectively reduces the spatial volume occupied by the high-voltage power supply by lowering the height of the support insulator 3.

[0042] Among them, the installation of the support insulator 3 can set the position and spacing according to actual conditions, and the number and position of the support insulator 3 also need to be reasonably planned according to the size and load-bearing requirements of the epoxy bracket; during installation, use appropriate fixings to ensure that the support insulator 3 is tightly connected to the power supply metal plate 2 and firmly fixed so that it can withstand the weight of the epoxy bracket and the high-voltage power module 4, and achieve good electrical insulation isolation to prevent current leakage to the ground and ensure system safety. Taking a 60kV energy storage high-voltage power supply as an example, 12 support insulators 3 can be used, and the bending failure load of each support insulator 3 is not less than 10kN, and the torsional failure load is not less than 6kN.

[0043] Furthermore, the epoxy bracket top plate 5 is located at the top of the support structure, which plays a protective and fixing role to prevent external objects from damaging the internal high-voltage power module 4; above the epoxy bracket bottom plate 8, multiple module chambers are formed by the epoxy bracket top plate 5, epoxy bracket partition 6, spacing plate and epoxy bracket plate 7, each module chamber is used to place a high-voltage power module 4, which can effectively avoid mutual interference between different modules; the epoxy bracket plate 7 and the epoxy bracket bottom plate 8 together constitute the frame structure of the epoxy bracket, providing a stable support for the entire bracket, ensuring that the bracket will not be deformed or damaged when bearing the weight of the high-voltage power module 4; the main function of the entire support structure is to perform electrical insulation isolation and stable support to ensure that the high-voltage power module 4 operates in a safe environment.

[0044] Specifically, the epoxy support top plate 5, the epoxy support partition plate 6, the epoxy support vertical plate 7 and the epoxy support bottom plate 8 can be made according to Figure 1 During the assembly process, ensure that the connections between the various components are tight and reliably fixed. Use special connection materials or fasteners to form a stable frame structure. After the assembly is completed, place the entire support structure on the post insulator 3. With reference to the positional relationship in FIG1 , adjust the position so that it is accurately docked with the post insulator 3 and fix it. Except for the connection with the post insulator 3, which can use metal connectors, the connectors in other positions must use insulating connections to ensure that the epoxy bracket will not shake or suffer electrical breakdown during operation, thereby ensuring the stability and reliability of the system.

[0045] Furthermore, the power modules 4 are placed in each module chamber in the support structure, and the power modules 4 achieve DC high voltage output through a unique Z-type series connection method; this connection method greatly reduces the relative maximum voltage difference of each layer, such as Figure 1 As shown, when 12 power modules 4 are used on each layer, the relative maximum voltage difference of each layer is only 12 kV, which is much lower than the maximum voltage achieved by connecting each column in series. Therefore, the height of the support insulator 3 only needs to meet the relative maximum voltage difference of each layer. Taking the output of 60 kV as an example, the height of the original support insulator 3 is more than 70 cm, while through the existing connection method, its height is only about 30 cm, which fully reduces the space occupied by the energy storage high-voltage power supply.

[0046] Specifically, when placing the above-mentioned power module 4, it is necessary to ensure that the power module 4 can be placed stably in the module cavity and has good abutting contact with the inner wall; at the same time, attention should also be paid to the direction and position of the power module 4 for subsequent line connection. The power panel schematic diagram in Figure 2 can be referred to to determine the correct placement direction of the power module 4, that is, in order to facilitate the series connection between each power module 4, the connection between adjacent power modules 4 should be that the positive pole of one power module 4 is connected to the negative pole of another.

[0047] See also Figure 1 and Figure 2 , connect the positive charging electrode 9 and the negative charging electrode 10 of each power module 4 to the output end of the power supply isolation transformer 1 through wires of appropriate specifications according to the design requirements; the power supply isolation transformer 1 plays the role of isolation and voltage conversion, providing a suitable charging voltage for the power module 4; when connecting, it is necessary to ensure that the wires are firmly connected and in good contact to avoid looseness or poor contact. Professional wiring tools and tightening measures can be used to ensure the reliability of the line connection.

[0048] Specifically, from Figure 1 and Figure 2 It can be clearly understood that the Z-type series connection mode of the power module 4 (i.e. according to Figure 1 The serial numbers of each module in the series are connected in sequence), and each power module 4 is connected in Z-type series to achieve the output of DC high voltage. The specific connection method is to connect the output positive electrode 11 of one power module 4 with the output negative electrode 12 of the next power module 4 in sequence, and finally form a series circuit structure. During the connection process, it is necessary to strictly follow the design drawings to ensure the correctness and reliability of the connection. Figure 1 and Figure 2 Check to avoid connection errors.

[0049] Furthermore, the high-voltage power supply module 4 primarily consists of a fuse 13, a single-phase uncontrolled bridge rectifier 14, a filter circuit 15, a snubber circuit 16, a freewheeling diode 17, an IGBT 18, a current sensor 19, and a control and protection driver board. Fuse 13 provides overcurrent protection within the circuit. When the current in the circuit exceeds the rated value, fuse 13 quickly blows, disconnecting the circuit and preventing damage to other electrical components due to overcurrent. The uncontrolled bridge rectifier converts AC power into DC power, providing a stable DC power supply for subsequent circuits. The filter circuit 15 removes noise and ripple from the DC power, ensuring a smoother and more stable DC output. The snubber circuit 16 absorbs transient energy surges in the circuit, protecting other components from damage caused by sudden high currents. The freewheeling diode 17 provides a freewheeling current path within the circuit. When the current in the circuit changes suddenly, the freewheeling diode 17 provides a path for the current, preventing the generation of excessive back electromotive force. The IGBT 18 (insulated-gate bipolar transistor) is a key power switching component that rapidly switches circuits on and off, enabling precise control of voltage and current. The current sensor 19 monitors the current in the circuit in real time and transmits the detected current signal to the control and protection driver board. The control and protection driver board is the core control component of the entire high-voltage power supply module 4. Based on the feedback from the current sensor 19, it controls components such as the IGBT 18, achieving precise control and protection of the high-voltage power supply module 4. Furthermore, if a circuit fault occurs, the control and protection driver board can promptly implement protective measures to ensure safe operation of the entire system.

[0050] Specifically, referring to Figure 3 , a fuse 13 is connected in series to the input circuit of the power module 4 . Fuse 13 protects other electrical components from damage in the event of an overcurrent fault. During connection, ensure that the rated current of fuse 13 matches the circuit design requirements. It can be selected and installed based on the electrical parameters shown in Figure 3 . The input of a single-phase uncontrolled rectifier bridge 14 is connected to the output of fuse 13 and the positive charging terminal 9 of the power module 4 . Its output is connected in parallel to the input of a filter circuit 15 . The single-phase uncontrolled rectifier bridge 14 converts AC power into DC power, providing a stable DC power source for subsequent circuits. Ensure that the positive and negative terminals are connected correctly to ensure proper circuit operation.

[0051] Depend on Figure 3 It can be seen that the positive output end of the filter circuit 15 is connected to the input end of the buffer circuit 16; the filter circuit 15 is used to limit the rapid rise of current during the circuit short circuit process. The buffer circuit 16 is generally composed of a buffer inductor and a diode in anti-parallel connection. During the connection process, the tightness of the line connection must be ensured to avoid signal interference.

[0052] Furthermore, the output end of the above-mentioned buffer circuit 16 is connected to the cathode of the freewheeling diode 17 and the output positive electrode 11 of the power module 4; the buffer circuit 16 can absorb the instantaneous energy impact in the circuit and protect other components from damage caused by instantaneous high current.

[0053] Freewheeling diode 17 is connected to the collector of IGBT 18, and the emitter of IGBT 18 is connected to the input of current sensor 19. Freewheeling diode 17 provides freewheeling in the circuit. When the current in the circuit changes suddenly, it provides a path for the current to flow, preventing the generation of excessive back electromotive force. IGBT 18 is an important power switching component that can quickly control the on and off of the circuit, achieving precise control of voltage and current. When connecting, pay attention to component parameter matching and installation position to ensure normal circuit operation.

[0054] from Figure 3 As can be seen in the diagram, current sensor 19 is connected in series with the emitter of IGBT 18 and the negative electrode of filter circuit 15. The power supply and output of current sensor 19 are connected to the input of driver protection circuit board 20. Current sensor 19 is used to monitor the current in the circuit in real time and transmit the monitored current signal to driver protection circuit board 20. During connection, ensure the accuracy and stability of signal transmission to avoid signal distortion.

[0055] in accordance with Figure 3 The output of the driver protection circuit board 20 is connected to the control terminals of components such as the IGBT 18. The driver protection circuit board 20 drives and controls the IGBT 18 based on preset trigger and reset signals. Furthermore, it controls the IGBT 18 and other components based on feedback from the current sensor 19, achieving precise control and protection of the high-voltage power module 4. Furthermore, if a circuit fault occurs, the driver protection circuit board 20 can promptly initiate protective measures, ensuring safe operation of the entire system. Ensure correct transmission of control signals during connection, and perform appropriate debugging and testing.

[0056] Further, after completing all installation and connection work, check Figure 1 、 Figure 2 and Figure 3 , conduct a comprehensive inspection of the entire system's lines, check whether the connections between the various components are firm, whether the wires are damaged, short-circuited or open-circuited, etc., to ensure the correctness and reliability of the line connections, and use professional detection tools for troubleshooting.

[0057] Use professional insulation testing equipment (such as DC withstand voltage equipment) to perform insulation tests on insulating components such as post insulators 3 and epoxy brackets to ensure that their insulation performance meets design requirements. Also, test the electrical insulation performance of the entire system to ensure that there are no safety incidents such as leakage during operation. Refer to relevant insulation testing standards and specifications for operation.

[0058] After completing the circuit inspection and insulation test, debug the system. First, connect the power supply isolation transformer 1 to the power supply and monitor the charging status of each power module 4 to ensure that it is charging properly. This can be monitored by observing the indicator lights on the power modules 4 or using specialized testing equipment. Then, gradually adjust the control parameters of the IGBT 18 to ensure that the system outputs the required DC high voltage. During the debugging process, it is necessary to closely monitor the system's operating status, such as voltage, current, and temperature, to promptly identify and resolve any problems. The monitoring system and the control system's host computer can be used to monitor relevant parameters.

[0059] After the system is debugged and running normally, a comprehensive test of the system performance is conducted. The test content includes parameters such as output voltage stability and output current to ensure that the system performance meets the design requirements.

[0060] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A Z-connected pulse energy storage high voltage power supply, characterized in that: include: A support structure comprising a power supply metal plate, a plurality of post insulators and an epoxy support base plate; The power supply metal plate is laid flat, and the plurality of support insulators are perpendicular to the upper surface of the power supply metal plate, with one end of each support insulator connected to the power supply metal plate and the other end of each support insulator connected to the epoxy support bottom plate; a plurality of module chambers are formed above the epoxy support bottom plate by the epoxy support top plate, epoxy support partition plate, spacer vertical plate, and epoxy support vertical plate; The power supply module is provided in plurality, each power supply module is located in a plurality of the module chambers respectively, and each power supply module is connected in series in sequence in a Z-type connection manner.

2. A Z-connected pulse energy storage high-voltage power supply according to claim 1, characterized in that: A plurality of epoxy bracket uprights are spaced apart and arranged above the epoxy bracket bottom plate, and the epoxy bracket uprights are all perpendicular to the upper surface of the epoxy bracket bottom plate; The bottom end of each epoxy bracket vertical plate is fixedly connected to the epoxy bracket bottom plate, and the top end of each epoxy bracket vertical plate is fixedly connected to the epoxy bracket top plate, and a vertical cavity is formed between adjacent epoxy bracket vertical plates in the vertical direction; Each of the epoxy bracket partitions is spaced apart in the vertical cavity, and each of the vertical cavities is divided into a plurality of transverse cavities, and the epoxy bracket partitions are perpendicular to the epoxy bracket vertical plate; Each of the spacing vertical plates divides the transverse cavity into a plurality of module chambers, and the spacing vertical plates are parallel to the epoxy support vertical plates.

3. A Z-connected pulse energy storage high-voltage power supply according to claim 2, characterized in that: A double-layer epoxy bracket vertical plate structure is used between adjacent vertical cavities.

4. The Z-connected pulse energy storage high-voltage power supply according to claim 2, characterized in that: The plurality of epoxy bracket partitions are respectively and evenly arranged in each of the vertical cavities.

5. The Z-connected pulse energy storage high-voltage power supply according to claim 2, characterized in that: A plurality of epoxy bracket uprights are evenly arranged above the epoxy bracket uprights.

6. The Z-connected pulse energy storage high-voltage power supply according to claim 2, characterized in that: The plurality of spacing vertical plates divide the transverse cavity into equal parts.

7. The Z-connected pulse energy storage high-voltage power supply according to claim 1, characterized in that: The Z-type connection method is that the power modules of each layer are connected in series in sequence, and each layer is connected in series in sequence.

8. A Z-connected pulse energy storage high-voltage power supply according to any one of claims 1 to 7, characterized in that: The power supply module includes a fuse, a single-phase uncontrolled rectifier bridge, a filter circuit, a buffer circuit, a freewheeling diode, an IGBT, a current sensor and a drive protection circuit board that are connected to each other.

9. The Z-connected pulse energy storage high-voltage power supply according to claim 8, characterized in that: The fuse is located in the charging positive electrode circuit formed by the single-phase uncontrolled rectifier bridge, and the output end of the single-phase uncontrolled rectifier bridge is connected to the filter circuit; One end of the filter circuit output is connected to the buffer circuit, and the other end of the filter circuit output is connected to the current sensor and the IGBT in sequence. The freewheeling diode is connected between the IGBT and the buffer circuit, and one end of the buffer circuit output forms the output positive electrode of the power module, and one end of the IGBT output forms the output negative electrode of the power module.

10. The Z-connected pulse energy storage high-voltage power supply according to claim 9, characterized in that: The driving protection circuit board is connected to both the IGBT and the current sensor.

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